wratten filter equivalent on Super Chromega

Discussion in 'B&W: Film, Paper, Chemistry' started by mario, Aug 14, 2008.

  1. mario

    mario Member

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    I am looking for info on the equivalent to Kodak written filters #25 deep red, #58 deep green and #47b deep bleu on a Super Chromega colour enlarger. I want to make colour separations from slide film onto tri-x film 8 x 10, to use for gum printing.

    Thanks Mario
     
  2. ic-racer

    ic-racer Member

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    Since the wratten filters listed have a different spectral cutoff than possible with the CC filters, you are going to be doing a 'loose approximation' only.

    On the color head I would try maximum Magenta + maximum Yellow for the RED
    maximum Yellow + maximum Cyan for the green and
    maximum Cyan + maximum Magenta for the Blue.
     
  3. mario

    mario Member

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    Wratten filter

    Thanks- will give it a try... seems soooo obvious, should have tried that long time ago.
    Mario

     
  4. Photo Engineer

    Photo Engineer Subscriber

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    You cannot duplicate a wratten filter with any build in enlarger filter. I have tried and it is far from satisfactory in making traditional separations such as for dye transfer. The colors are not saturated or pure enough and therefore the color contamination is too high.

    It might be useful in some applications though, and that depends.

    PE